T50 wt 6 spool + rack set. SCANFIL Organic Cotton Thread Set comes with 6 spools each with 500 yards of 50/2 Extra Long Staple Organic Pima cotton fiber grown in USA without use of chemicals and pesticides. Set comes with a free wooden thread stand to attractively display threads in the home sewing room. Earth friendly from start to finish. Machine needle size: US 12-14 / NM 80-90.